No. The official FAQ describes separate fees and gifts for each included spouse or eligible unmarried child under 21.
List the people before calculating
Confirm current terms and eligibility for each person, including age issues. Keep professional and household costs separate from official fees and gifts. A principal’s progress does not automatically establish every family member’s approval or permission to begin an activity. Each included spouse or eligible unmarried child under 21 entails a US$1 million gift and US$15,000 nonrefundable processing fee, including families of corporate-sponsored principals. The FAQ recommends inclusion with the initial application. Review any CSPA issue individually; immigration eligibility and visa availability remain separate from payment.
The employment-based immigrant categories include a spouse and unmarried children under twenty-one as derivatives, and it is natural to expect the same pattern elsewhere, but that expectation is an assumption rather than a finding. An employment-based immigrant petition's provisions for a spouse and unmarried children under 21 operate under that petition's own governing rules, and participating in the Gold Card program separately does not modify or expand those provisions. Whether someone qualifies as a joining family member depends on the relationship qualifying at the relevant time, so a twenty-first birthday or a change in marital status is a date that matters as much as any figure.